Review on Canon EF 70-300mm f/4-5.6 IS USM Lens - Optimized for Canon EOS SLR Cameras by Faun Su ᠌

The disadvantages can be considered insignificant - they do not affect the quality of the shooting. The benefits far outweigh. I don’t consider the noisy operation of the stabilizer a disadvantage, for example, I even like it when I hear it :-) With its pros. Stabilizer: allows you to shoot handheld even at relatively long shutter speeds (up to ~ half a second), has two modes of operation (stabilization along one axis and two). Cutting. Fast focus. Some cons: Backlash focus ring; Doesn't affect functionality, just annoying. The front lens rotates. A strong stabilizer increases energy consumption.